Agnes Obel, Ethan Gruska

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The deeply literate Danish keyboardist Obel says she likes to write songs about “secrets.” Her glossy music will put a hush across Stoughton. Gruska, the maternal grandson of film composer John Williams, “might be L.A.’s next great songwriter,” according to the L.A. Times. Traces of James Blake and Sun Kil Moon inform Gruska’s compositions on keys and a guitar that was once owned by Glen Campbell.